Coal-drill



(No Model.)

J. COLLIER.

' OOAL'DRILL, No. 525,093. Patented Aug. 28, 1894.

WITNESSES [/V'VEJVZ'OQ UNITED STATES PATENT OFFICE.

JOHN COLLIER, OF JUSTUS, OHIO.

COAL-DRILL.

SPECIFICATION forming part of Letters Patent No. 525,093, dated August28, 1894. Application filed June '7, 1394- Serial No- 513,722. [Nomodel.)

To all whom it may concern:

Be it known that I, JOHN COLLIER, a citizen of the United States,residing at Justus, in the county of Stark and State of Ohio, haveinvented certain new and useful Improvements in Goal-Drills; and I dohereby declare that the following is a full, clear, and exact;description of the same, reference being had to the annexed drawings,making a part of this specification, and to the letters of referencemarked thereon, in which Figure 1, is an isometrical view of the drill.Fig. 2, is vertical section through line so on, Fig. 1. Fig. 3, is asectional view, showinga portion of the power shaft, and illustratingthe bandle attached thereto. Fig. 4, is a face view of the slidingclutch. Fig. 5, is a front face view of the sprocket worm wheel.

The present invention has relation to coal drills, and it consists inthe different parts and combination of parts hereinafter described andparticularly pointed out in the claim.

Similar letters of reference indicate correspending parts in all thefigures of the draw ings. In the accompanying drawings A, represents thebar which may be formed of any desired length, and is supported at itsrear end in the ordinary manner. Upon the bar A, is located the frame B,which frame is moved forward upon the bar A, as hereinafter described.The rear end of the frame B, is provided with the yoke a, to which yokeis journaled the power shaft b said power shaft having securely attachedthereto the beveled gear wheel 0, which beveled gear wheel meshes with,and communicates rotary motion to the beveled gear wheel d, whichbeveled gear wheel is securely attached to the drill shaft 0. The frontor forward end of the drill shaft 0, is provided with an ordinarysocket, which is to receive the drill D,

which drill may be of the form shown, or it may be of any other desiredform or kind, inasmuch as the drill proper forms no particular part ofthe present invention, except that a drill of some kind must be employedto carry out the object and purpose of the machine. The front or forwardportion of the drill shaft 0 is formed somewhat larger in diameter thanthe portion of said shaft contained in the frame B, and as shown it isprovided with the worm e, which worm communicates rotary motion to thewheel j, which wheel in turn communicates rotary motion to the shaft g,said shaft g being properly journaled to the frame B, and is locatedsubstantially as shown in Fig.1. The bottom or lower end of the shaft g,is provided with the worm h, which worm communicates rotary motion tothe wheel h, which wheel h is loosely mounted upon the shaft E, saidshaft being properly journaled to the flanges F, which flanges areformed upon thebars G, said bars being securely held in proper positionby means of the clamping bolts 70 or their equivalents.

In the drawings but one flange G is shown in Fig. 1; but it will beunderstood that two flanges, such as G are to be employed, and locatedupon opposite sides of the chain H. One end of the shaft E isscrew-threaded, upon which screw-threaded portion is located thescrew-threaded nut I, and as shown, said screwthreaded nut is providedwith the hooked arms is, which arms are for the purpose hereinafterdescribed. Upon the inner side of the screw-threaded nut I, is locatedthe spider J, which spider is provided with the grooved flange 10 Thespider J, is provided with the angular aperture Z0 which angularaperture is for the purpose of receiving an angular portion of the shaftE.

The wheel h is provided upon its outer side with the lugs h which lugsare for the purpose of engaging the arms of the spider J, and therebycause the wheel h to rotate the shaft E, during the time the arms of thespider are engaged with the lugs h To the bar A, is attached the chainH, which chain is formed of a length to correspond substantially withthe length f travel designed to be given to the frame The chain H issecurely attached to the bar A, by means of the hooks K.

The sprocket wheel K is securely attached to the shaft E, and is solocated that it will engage with the links'of the chain H. The frontorforwardend of the bar A is provided with the detachable extension K saidextension being for the purpose of providing a means for attaching thefront or forward end of the bar A to the vein of coal, calculated to bedrilled, which attachment is made by ICC forming a hole in the vein ofcoal of sufticient size to receive the extension K which extension issecurely fastened by a wedge which flanges are provided with the notchesn, which notches receive the pin W, said pin being securely attached tothe bar A; and for the purpose of preventing any disengagement of theflanges n, the pinp is provided.

For the purpose of providing a means for detaching the bar A, theflanges n, are provided with the removable pin and for the purpose ofproviding for different angles, a series of apertures, such as 19 may beprovided. In use the bar A, together with its different parts areproperly adjusted, and the drill D brought into contact with the coal tobe drilled, at which time rotary motion is communicated to said drill,and the frame B, moved forward, by means of the feed mechanism abovedescribed. After the drill D has been entered the desired depth, thewheel h is thrown out of gear by rotating the nut I until the spider J,has become disengaged from the flanges or lugs h at which time the frameB is free to be moved backward. It will be understood that the links ofthe chain H, provide teeth which provide the proper engagement for thesprocket wheel K.

Having fully described my invention, What I claim as new, and desire tosecure by Letters Patent, is

The combination of the bar A, having attached thereto a link-chain, theframe 13, mounted upon the bar A, and provided with the yoke a the powershaft 6 provided with the beveled gear wheel a, the drill shaft 0provided with the gear wheel 01, the worm e meshing with the wheel f,the shaft g, provided with the worm h, the wheel h loosely mounted uponthe shaft E, the sprocket wheel K meshing with the chain, and means forthrowing the drill shaft in and out of gear with the chain,substantially as and for the purpose specified.

In testimony that I claim the above I have hereunto subscribed my namein thepresence of two witnesses.

JOHN COLLIER. Witnesses:

E. A. 0. SMITH, F. W. BOND.

